JPH08110046A - Safety device for ignition rod - Google Patents

Abstract

PURPOSE: To cover an ignition rod which ignites by operating an operation member and provide a safety device by locking the operation member based on the structure of a protection frame which envelops the operation member and prevent the operation member from leaving to stand by returning the operation member to a locked state after the ignition, and thereby enhance the reliability device. CONSTITUTION: A protection frame 26 is installed so that it may envelop an operation unit 20a of an operation member 20 which operates ignition. The protection frame 26 is movably installed in the lateral direction of the operation member 20 with one end of the protection frame 26 as a basic point, allowing the other end 26c to be returned and displaced. A locking part 27, which partially interferes with the operation member 20 in a locked state and ignition- locks, is installed to the other end 26c, thereby returning to the locked state in an automatic mode by the returning movement of the operation member 20 after ignition operation and returning movement of the protection frame 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition rod for ejecting a flame from a rod-shaped tip portion by an ignition operation of an operating member,
The present invention relates to a safety device for an ignition rod, which normally locks the ignition operation of an operating member and unlocks the lock during use to enable the ignition operation.

[0002]

2. Description of the Related Art Ignition rods are convenient because they can be easily ignited by pushing a trigger-like operating member, but those who are unaware of proper use, such as children, can ignite carelessly and safely. It is not preferable.

Therefore, an ignition rod with improved safety is demanded so that a person who does not know how to use it properly cannot inadvertently ignite it or prevent accidental ignition from occurring. Spark rods with various safety devices have been proposed.

For example, Japanese Utility Model Publication No. 62-5565 and Japanese Patent Publication No. 60
-122828 and U.S. Pat.No. 5,199,865 disclose ignition rod safety devices that manually move a locking member that blocks a drive operation of an operating member between a locked position and a released position. In this mechanism, the safety device remains released unless it is manually returned to the locked position after the ignition is performed by moving it from the locked position to the unlocked position.

In the above-mentioned conventional ignition rod, if the lock member is left without forgetting to return it from the release position to the lock position after the lock member is moved to the release position and ignition is performed, the lock member is released. However, there is a problem that the above-mentioned inadvertent ignition can be performed without performing the above-mentioned lock function.

Further, in the gas lighter, for example,
As disclosed in Japanese Unexamined Patent Publication No. 5-256448 and U.S. Pat. No. 4,832,596, a lock member for disabling or sliding a lock member for disabling the operation is operated at a part of an operating lever that is pushed down when a gas lighter is ignited. When the lock member is movably installed and the lock member is manually operated to the release position and then the operation lever is pushed down, the lock member moves to the lockable position according to the operation or the gas lighter is released. At that time, a structure is proposed in which the spring is returned to the locked state so that it is not left in the released state.

[0007]

However, the safety mechanism of the gas lighter as described above cannot be applied to the ignition rod having a different structure as it is, and the structure of the ignition rod main body and the operating member for operating for ignition. In terms of the shape and the relationship with the protective frame formed around the operating member, the ignition lock is normally set separately for the ignition rod, and at the time of ignition, the ignition lock is released by an operation related to the operation of the operating member. It is desired to achieve a mechanism with a simple structure in which, while the ignition is enabled, the mechanism automatically returns to the locked state with the return movement of the operating member after ignition.

In view of this point, the present invention is applied to an ignition rod which is ignited by operating an operating member, and provides a safety device for an ignition rod capable of performing ignition lock, unlocking, and automatic return. That is the purpose.

[0009]

In order to achieve the above object, the ignition rod safety device of the present invention is provided with an ejection nozzle for ejecting gas at the rod-shaped tip portion, and a gas tank is provided in the main body portion and the ejection nozzle from the gas tank. A valve mechanism that opens and closes the supply of gas to the nozzle and a piezoelectric unit that generates a discharge voltage for ignition are installed, and an operating member that drives the valve mechanism and the piezoelectric unit to perform ignition operation is slidably installed. The operating portion of the operating member is exposed to the outside of the main body, and a protective frame is installed so as to surround the operating portion, and the protective frame can be restored and displaced from one end as a base point. A part extending movably to the side of the operating member and locking the ignition operation of the operating member at the other end by interfering with a part of the operating member when in the locked state when not in operation. Provide a locking part to The locking part moves in response to the unlocking operation of the protective frame, and the ignition of the operating member is performed while the interference with the operating member is released, and it is automatically locked by the return movement of the operating member and the restoration movement of the protective frame. It is characterized by returning to the state.

Further, a protrusion is provided on the side surface of the operating member, and a locking portion that interferes with the protrusion is provided on the protective frame,
It is preferable that the lock portion is moved to a position where it does not interfere with the lock release deformation of the protective frame.

Further, it is preferable that the protective frame is elastically deformable at the other end with one end as a base point and is configured to move from the unlocked state to the locked position by a restoring force by elastic deformation.

[0012]

According to the ignition rod safety device of the present invention, when the protective frame is in the locked state, the locking portion of the protective frame is in a position where it interferes with a part of the operating member, and the operating member moves. Is blocked and the ignition is locked. When the protective frame is operated in the unlocking direction against its restoring force, the interference relationship between the locking portion and the operating member is released, which allows the operating member to move, and the ejection of the operating member The fuel gas is ignited. When the operation member and the protection frame are released from operation, a part of the operation member and the locking portion of the protection frame return to the interference state as the operation member returns and move, and the ignition lock state is automatically restored. Therefore, when not in use, it is possible to realize an ignition rod with extremely high safety by constantly disabling the ignition operation of the operating member to prevent inadvertent ignition.

Further, by locking and unlocking the operating member by utilizing the displacement of a relatively large part such as a protective frame, a large amount of displacement of the unlocking operation can be taken and a reliable unlocking operation can be performed, and good operability Is obtained. In particular, when the protective frame is provided in a structure utilizing elastic deformation, the protective frame can be restored and moved from the unlocked state to the locked state without requiring additional biasing means.

Further, in a state where the protective frame is displaced and unlocked, even if the operating member returns, the locked state does not occur, and the protective frame is unlocked by a finger different from the operation of the operating member. By being operated, 1
It is excellent in operability since it is not necessary to perform the lock release operation each time ignition is performed when re-ignition when ignition is not performed by the ignition operation of the operation member.

On the other hand, the normally-fixed protective frame is deformed to release the ignition lock, which makes it difficult for a person who does not know how to properly use the lock to release the lock.
Moreover, it prevents accidental ignition.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of an essential part of an ignition rod having a safety device as an example, FIG. 2 is a perspective view of the safety device portion, FIG. 3 is an exploded perspective view thereof, and FIG. 4 is a perspective view of an unlocked state. There is.

The ignition rod 1 is composed of a body portion 2 and an extension portion 3 (a tip portion is not shown) extending from the body portion 2 in a rod shape. A case portion of the main body 2 is formed of a tank cover 5 on the base end side and an intermediate case 6 in front of the tank cover 5. The tank cover 5 is formed in a tubular shape with an open front, and the intermediate case 6 is vertically divided and formed substantially at the center, one of which is shown in FIGS.

A gas tank 7 formed of a synthetic resin containing a high-pressure gas such as butane gas is installed in the outer case 5 on the base end side of the main body 2. The upper wall of the gas tank 7 is filled with gas. A valve mechanism 8 for opening and closing the supply is provided. Gas is supplied to the valve mechanism 8 through a core 9 inserted in the gas tank 7, and a nozzle member 10 is interposed in the gas passage, and the forward movement of the nozzle member 10 forms a passage. The gas is supplied by being opened, and the backward movement by the spring closes the passage to stop the gas supply. The amount of gas supplied, that is, the size of the flame,
The flame adjusting knob 13 is connected to the adjusting sleeve 12 and protrudes to the outside to adjust the flame adjusting knob 13.

The tip end portion of the nozzle member 10 of the valve mechanism 8 is engaged with one end portion of a rotating lever 14 for opening and operating the nozzle member 10, and the tip end portion of the nozzle member 10 is elastic. Shield packing 15 made of material is installed. The other end of the rotating lever 14 is linked to an operation member 20 described later, and the rotating lever 14 is pivotally supported by the extended portions on both sides of the gas tank 7.

A sleeve member 16 that contacts the shield packing 15 is installed on an extension of the nozzle member 10. One end of a connector pipe 17 is connected to the sleeve member 16 and the other end of the connector pipe 17 is connected to the sleeve member 16. It is connected to one end of the gas pipe 18. The gas pipe 18 extends to the tip of the extension portion 3 and is connected to an ejection nozzle (not shown) to feed gas.

Further, in the intermediate case 6 of the main body 2,
An operating member 20 (ignition lever) is slidably provided on the side of the valve mechanism 8 in parallel with the center line of the valve mechanism 8, and a piezoelectric member is provided inside the operating member 20 and between the gas tank 7. Unit 22 is installed.

The operating member 20 has an opening 6a in the intermediate case 6.
(See Fig. 3) Cylindrical part slidably supported inside
20b, and the operating portion 20 is obliquely attached to the tip of the tubular portion 20b.
a is provided, and projections 25 projecting laterally are connected to both side surfaces of the tubular portion 20b. Further, a leg portion 20d extending in the sliding direction is provided at the end of the tubular portion 20b on the valve mechanism 8 side.
Are connected. The leg portion 20d is configured to be linked to the end portion of the rotating lever 14 to rotate the same during ignition movement.

That is, the rotating lever 14 is formed in a substantially L shape, is rotatably supported around a fulcrum of an intermediate portion, and is rotated by the leg portion 20d of the operating member 20. Yes, and the valve mechanism 8 is rotated by the ignition operation.
The nozzle member (10) is moved so as to be drawn out, and the nozzle member (10) is opened to feed gas.

The piezoelectric unit 22 supplies a discharge voltage, and a sliding portion 22a that expands and contracts is fitted into the tubular portion 20b of the operating member 20.
The slide portion 22a is configured to move in and out in association with the backward movement of the above, and a discharge voltage is generated. The lead wires 23 (two wires) connected to the electrodes of the piezoelectric unit 22 are extended portions 3
It is arranged so as to extend inside to a tip portion, and is connected to a jet nozzle (not shown) at the tip portion and a discharge electrode.

A protective frame 26 is separately formed in the intermediate case 6 so as to surround the operation portion 20a of the operation member 20 while forming a space for inserting a finger. A connecting cylinder 6b is extended to the base of the intermediate case 6, the connecting cylinder 6b is connected to the gas tank 7, and the tank cover 5 is fitted to the outer peripheral portion of the connecting cylinder 6b.

On the other hand, with respect to the ignition rod 1 having the above structure, a safety device for locking or releasing the ignition operation of the operating member 20 is constituted by the protective frame 26 and the projection 25 of the operating member 20. There is.

The protruding portion 25 of the operating member 20 is the operating portion 20a.
Side tip is narrow and wide on the inner end side, stepped portion 25a is provided on one side, and the opposite tip side is an inclined surface.
Formed on 25b. The tip of the protrusion 25 is a notch 6d formed in the wall 6c of the intermediate case 6 (see FIG. 3).
The stepped portion 25a comes into contact with the inner surface of the wall portion 6c to restrict the protruding position of the operating member 20.

The protective frame 26 is provided with a fixed portion 26b at one end of a frame body 26a formed by bending. The fixing portion 26b is inserted into the locking window 6e of the intermediate case 6 to fix the intermediate case 6 by sandwiching the front and rear plate members, and the upper and lower inner and outer sides of the locking window 6e of the intermediate case 6. The fixing projection 6f
Is attached, and the end portion of the fixing portion 26b of the protective frame 26 abuts on the fixing projection 6f to firmly and securely fix the engagement.
The fixing projection 6f adjacent to the operating portion 20a of the operating member 20 is formed in a taper shape so that the space inside the protective frame 26 is smoothly continuous.

The protective frame 26 is attached and supported only by the fixed portion 26b, and the other end 26c of the frame 26a is inserted into the intermediate case 6 so as to be deformably movable. Also,
When the protective frame 26 is deformed such that the other end 26c is pushed into the intermediate case 6, that is, when the protective frame 26 is unlocked and deformed,
The other end portion 26c moves in a direction substantially orthogonal to the sliding direction of the operating member 20 by elastic deformation with the fixed portion 26b as a base end, and has an elastic restoring force due to the deformation.

The other end portion 26c of the protection frame 26 extends to both sides, extends inward along the side of the operating member 20, and the operating member 20 is inserted between the other end portions 26c on both sides. A bent stopper 26d is provided at the tip portion of the other end portion 26c, and the stopper 26d abuts the protrusion 25 of the operating member 20 from the inside to restrict the position in the protrusion direction.
When the lock is deformed by being pushed in, the stopper 26d comes into contact with the opening edge portion 6h of the intermediate case 6 to regulate the pushing limit.

A locking portion 27 projecting inward is provided on the inner side near the stopper 26d. The end surface of the locking portion 27 is an inclined surface 25 of the protrusion 25 of the operating member 20.
It is formed on a substantially parallel inclined surface 27a facing the b (see FIG. 5). The distance between the inner sides of the other end portions 26c on both sides corresponds to the lateral width of the operating member 20 including the protrusion portion 25, and the protrusion portion 25 can be inserted without being engaged, while the engaging portions 27 on both sides are provided.
The distance between the inner sides corresponds to the lateral width of the operating member 20 excluding the protrusion 25, and the protrusion 25 is formed in such a size that it cannot pass and interferes. The frame 26a at the base portion where the other end 26c branches off is provided with a protrusion 26e,
Similar to 26d, it is provided so as to be able to come into contact with the front surface of the intermediate case 6 for regulation at the time of pushing deformation.

Due to the relationship between the operating member 20 and the protective frame 26, the projection 25 and the locking portion 27 interfere with each other to perform ignition lock, while the other end 26c of the protective frame 26 is pushed in to release the ignition lock. In this state, the operating member 20a is operated to slide the operating member 20 to enable ignition operation, and when the operating member 20 returns and moves to unlock the protective frame 26, the locking portion 27 automatically moves. It is configured to return to the ignition lock state.

The operation of the safety device for the ignition rod 1 as described above will be described. First, the state shown in FIG. 1 and FIG. 2 is a normal state (when not in use) in which the protective frame 26 is left in a locked position where the other end 26c is projected, and in this state, FIG. As shown in FIG.
Is at a position where it interferes with the protrusion 25 of the operating member 20. If the operating member 20 is pushed in in this locked state, the protrusion 25 comes into contact with the locking portion 27 and the operating member 20 cannot be ignited. Therefore, even if a person who does not know how to use it properly operates the ignition rod 1, it does not ignite and is safe.

Next, when it is desired to use the ignition rod 1, FIG.
As shown in, the protective frame 26 is deformed so as to push the other end 26c of the protective frame 26, and the ignition operation is performed so that the operating member 20 is pushed in while the lock releasing operation is performed. When the other end portion 26c is pushed, the locking portion 27 moves inward, and as shown in FIG.
When the operation member 20 is pushed out as shown in (C) of FIG.

When the operating member 20 is ignited, the nozzle member 10 is pulled out through the rotary lever 14 along with the movement of the operating member 20, and the valve mechanism 8 is opened to operate the gas pipe 18.
Gas is supplied to the jet nozzle through the. Operation members
A discharge voltage (AC voltage) is generated from the piezoelectric unit 22 in accordance with the operation of 20, and is applied between the discharge electrode of the extension portion 3 and the jet nozzle to ignite the jet gas.

When the operator releases the operating member 20 to extinguish the fire,
Operation member by the elastic force of the spring in the piezoelectric unit 22
20 moves protruding and returns to the initial position, and the protective frame 26
When the releasing operation is released, the restoring elastic force moves the other end 26c in the projecting direction, the locking portion 27 moves to the position of interference with the projection 25, and the operating member 20 is prevented from being pushed in the locked state. It automatically returns to.

If the unlocking operation of the protective frame 26 is released before the operating member 20 returns and moves, the locking portion 27 of the protective frame 26 has moved to the lock position first.
The inclined surface 25b of the protrusion 25 of 20 contacts the inclined surface 27a of the locking portion 27, moves the locking portion 27 so as to deform the protective frame 26, and passes through to return to the locked state. .

According to the above embodiment, since the metal spring is not used as the restoring force from the unlocked state to the locked state of the protective frame 26, the manufacturing cost is reduced and the structure is easy to assemble. And workability is good. Further, the elastically deformable portion is the whole of the protective frame 26 with the fixed portion 26b as the base point, the displacement operation amount at the time of unlocking becomes large and the operation is reliable, the releasing operation is easy and the required dimensional accuracy is low. It is easy to manufacture.

Furthermore, in the state where the protective frame 26 is pushed in and unlocked, even if the operating member 20 is returned, it does not enter the locked state, and the protective frame 26 is held by a finger different from the operating member 20. By performing the lock release operation of the operation member 20, the operation member 20 may be simply pushed in at the time of re-ignition when ignition is not performed by one push operation of the operation member 20, and it is not necessary to perform the lock release operation each time. , Excellent in operability.

In the above embodiment, the elastic deformation of the protective frame 26 is used to obtain the restoring force for returning from the unlocked state to the locked state.
The other end 26c of 26 is displaceably provided with one end as a base point,
A biasing member that biases the other end portion 26c in the protruding direction may be separately provided.

[0041]

According to the ignition rod safety device of the present invention as described above, the protective frame installed so as to surround the operating portion of the operating member for performing the ignition operation can be restored and displaced from one end as a base point. The other end is provided so as to be movable on the side of the operating member, and the other end is provided with a locking portion that interferes with a part of the operating member, so that the protective frame is released. This makes it difficult to unlock the lock by a person who does not know how to use it properly, and prevents inadvertent ignition, and automatically locks the operation member by the return movement of the operation member and the restoration movement of the protective frame. When the fire is extinguished, a reliable locked state can be secured and reliability can be improved without being left in the unlocked state by returning to.

[Brief description of drawings]

FIG. 1 is a side view showing a longitudinal section of an essential part of an ignition rod equipped with a safety device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the safety device portion of FIG. 1 with a case and an internal structure partially removed.

FIG. 3 is an exploded perspective view of an intermediate case, an operating member, and a protective frame.

FIG. 4 is a perspective view of essential parts showing an unlocked state.

FIG. 5 is an explanatory diagram showing a positional relationship between a locked state and an unlocked state.

[Explanation of symbols]

 1 Ignition rod 2 Main body 6 Intermediate case 7 Gas tank 8 Valve mechanism 20 Operating member 20a Operating part 22 Piezoelectric unit 25 Projection 26 Protective frame 26a Frame 26b Fixed part 26c Other end 27 Locking part

Claims (3)

[Claims] 1. A rod-shaped tip portion is provided with an ejection nozzle for ejecting gas, a main body portion has a gas tank, a valve mechanism for opening and closing the supply of gas from the gas tank to the ejection nozzle, and a piezoelectric element for generating a discharge voltage for ignition. A unit is installed, and an operating member for driving the valve mechanism and the piezoelectric unit to perform an ignition operation is slidably installed, and an operating portion of the operating member is exposed outside the main body. In addition, in the ignition rod in which a protection frame is installed so as to surround the operation portion, the other end portion of the protection frame, which can be restored and displaced from one end as a base point, extends laterally of the operation member and is movable. A lock portion is provided at the other end of the protective frame to lock the ignition operation of the operating member by interfering with a part of the operating member when in a non-operation locked state. In response to the unlocking operation The locking member is moved and the interference with the operation member is released, and the ignition operation of the operation member is performed, and the locking state is automatically restored by the return movement of the operation member and the restoration movement of the protective frame. Ignition rod safety device. 2. A protrusion is provided on a side surface of the operation member, and a locking portion that interferes with the protrusion is provided on the protective frame, and the locking portion is located at a position where the locking portion does not interfere due to unlocking deformation of the protective frame. The ignition rod safety device according to claim 1, wherein the safety device is movable. 3. The protective frame according to claim 1, wherein the other end of the protective frame is elastically deformable with one end as a base point and moves from the unlocked state to the locked position by a restoring force due to elastic deformation. Ignition rod safety device.